A multicast data forwarding method and device supporting virtual terminals

Abstract

The invention discloses a multicast data forwarding method and device supporting a virtual terminal. The bridge forwarding module receives the multicast data sent by the terminal and determines the output port. When an output port is the same as the input port of the multicast data, and the input port uses When the reflective relay function is enabled, the Ingress_E‑CID is not carried in the forwarded message information or the value of the Ingress_E‑CID is equal to 0; when an output port is the same as the input port of the When the relay function is used, the Ingress_E-CID is carried in the forwarding message information, and the value of the carried Ingress_E-CID is the E-CID when the multicast data is input. The invention enables the PE supporting the virtual terminal technology to send and receive data normally when multicasting by modifying the source port filtering mechanism.

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to a multicast data forwarding method and device supporting virtual terminals. Background technique [0002] With the development of data communication network, the network bandwidth is getting bigger and bigger, and there are more and more terminal devices. In order to reduce the cost, the concept of converging the network and the data center is proposed, and it is supported by operators and equipment manufacturers. It has a good reputation. Prospects. DCB (Data Center Bridging, Data Center Bridge), as a device supporting the next-generation data center Ethernet, needs to meet the requirements of the next-generation data center network, including support for a large number of terminal server devices that have proliferated. [0003] For this reason, the IEEE802.1 DCB task group created two standard projects IEEE802.1Qbh and IEEE802.1Qbg to solve this problem. The Qbh...

AI Technical Summary

Problems solved by technology

[0013] If an Extended Port of the Port Extender is not directly connected to a single terminal, that is, when an E-channel contains data of several terminals, the multicast filtering mechanism will cause false filtering

For example, when the terminal equipment uses the VEPA technology defined by the Qbg standard, such as Figure 4 As shown, when a multicast group member includes VM1 and VM3 in End Station2, 3 and EndStation4, and VM3 sends multicast data, in this case, if the existing source port filtering technology is used, VM1 cannot receive the multicast data

Images